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Nematronics: Reciprocal Coupling between Ionic Currents and Nematic Dynamics.

Chau Dao1, Jeffrey C Everts2,3, Miha Ravnik4,5

  • 1Department of Physics and Astronomy and Bhaumik Institute for Theoretical Physics, University of California, Los Angeles, Los Angeles, California 90095, USA.

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|May 8, 2023
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Summary
This summary is machine-generated.

Ionic currents reciprocally couple with nematic texture dynamics in electrolytes. This study derives equations of motion, revealing "nematic torque" and motive forces, paving the way for nematronics and nematic iontronics.

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Area of Science:

  • Physics
  • Materials Science
  • Soft Matter Physics

Background:

  • Spintronics utilizes electron spin dynamics for device functionality.
  • Nematic liquid crystals exhibit orientational order with unique dynamic properties.
  • Ionic charge transport in electrolytes can influence material properties.

Purpose of the Study:

  • To investigate the reciprocal coupling between ionic charge currents and nematic texture dynamics.
  • To develop a theoretical framework analogous to spintronics for nematic electrolytes.
  • To explore potential applications in nematronics and nematic iontronics.

Main Methods:

  • Adopting a spintronics-inspired approach.
  • Assuming quenched fluid dynamics to develop equations of motion.
  • Deriving adiabatic "nematic torque" and reciprocal motive forces based on the principle of least dissipation.
  • Utilizing a phenomenological framework.

Main Results:

  • Established reciprocal coupling between ionic currents and nematic director field dynamics.
  • Derived equations of motion analogous to spin torque and spin pumping.
  • Identified "nematic torque" and reciprocal ionic motive forces.
  • Proposed impedance measurements for extracting coupling strength.

Conclusions:

  • The study demonstrates a novel coupling mechanism in nematic electrolytes.
  • This physics offers potential for developing new electronic devices based on ionic and orientational dynamics.
  • Further exploration could lead to advancements in nematronics and nematic iontronics.